Wire-winding tool.



W. A. CORNOCK.

WIRE WINDING TOOL APPLICAF'ION' FlLiED Aucml. 1915.

1,176,946. Patented'Mar. 28,1916.

WITNESS INVENTOR.

ATTOR To all whom it may concern;

- OFFIC.

WILLIAM A. CORNOCK, 0F LOWELL, MASSACHUSETTS.

Specification of Letters Patent.

WIRE-WINDING TOOL.

Patented Mar. 28, 1916.

Application filed August 17, 1915. Serial N 0. 45,988.

Be it known that I, WILLIAM A. QoRNooK, a citizen of the United States, residing at 1% Lowell, in the county of Middlesex and State "usually wound 'upon' a revolving mandrel and my device is intended to guide the wire 'as it is fed thereon.

It is particularly adapted for winding what. is known as plano wire as such wire is of such a character that it should not be bent any more than is absolutely necessary before being wound onto the mandrel. It is also specially adapted for winding close wound springs. v j a My device is simple and can be easily prepared for winding and it is also easily handled while the spring is being wound.

In windin such springs, it is desirable that the tension of the wire should be uniform for any particular spring, ,while it is being wound, and this tension should be capable of adjustment for different springs, so that the spring can be wound tlghter, that is with less spring back, or looser, as desired. It is also desirable and usually necessary that the distance between the adjoining coils of the wire should be adjusted with more or less accuracy and to accomplish this, it is necessary that the wire should be fed on regularly at a definite and unvaryi-ng distance from the preceding turn.

My device consists substantially of a pair of pliers or pincers modified in accordance with my invention and with certain attachments thereto all of which cooperate.

While I may use any form of pliers, I

prefer to use a well known form wherein the jaws have faces which as they open and close remain parallel, as with such faces can better regulate the tension on the wire. I

In the drawings, Figure 1 is a side 'eleva: tion of my device threaded with the/wire and in position with reference to a winding mandrel. Fig. 2 is a view looking u ward on the line X-Y 'of Fig. 1 with the mandrel and wire omitted. Fig. '3'is aplan' view of Fig. 1. Fig. 4 is an enlarge'd detail view of part of Fig. 3. Fig.5 is a' front elevation of my devicesh-owin'g a wire in position. Fig. 6 is a detail of the adjusting bolt.

In the form of pliers shown, the jaws 10 and 11 are so pivoted at 12, 14, 13 and 15 to I the handles 20 and 21 that the adjoining faces 16 and 17 are always parallel whether the pliers are opened or closed. This is a well known construction. l

In the adjoining faces 16 and 17 of the jaws l0 and 11, I cut longitudinal grooves- 18 and 19 in such position that they are parallel on each side of the longitudinal axis of the pliers. the pivots 12, 13,. 14, 15 do ,not cross the longitudinal axis, the wire Wto be wound can pass directly through the'wire directing grooves 18, 19 and will be in such position that the pliers willbe easily balanced.

I prefer to connect the handles 20 and 21 by means for adjusting the tension on the jaws. This means may be a bolt such as B which extends through suitable openings 31 and 32 in the handles 20 and 21 respectively. This bolt B has a head 30 and preferably has a projection or key 33 which registers with a slot 34 to prevent'turning. The tension is adjusted by means .of a knurled nut 35. Through this bolt at a point which is substantially on the axis of the device is a hole 36 through which the Wire W is passed. 7

To the top of one jaw such as 10, I at tach, preferably detachably, by means of a screw 40, the guide lip 41 which fits snugly thereon and preferably has a ridge 42 which enters a longitudinal ,slot 43 in the top of jaw 10. This guide lip projects at 44 ahead drel M and prevent my device fr'om being pulled downward out of position by the drag of the wire. To the side of this guide 'lip'bymeans of a screw 50, I pivot one or more, preferably a plurality, of gage leaves 51 of such shape that when they are swung down in front of the noses of the jaws they will bear against the mandrelM, between it and such noses. The guide lip is preferably narrower at the front part 44 than the jaws so that the inside gage leaves may come directly over the wire directing grooves 18, 19 as shown in Fig. 5. By loosening screw 50,

1 one or more leaves 51 may be swung down ,and may be then fixed in position by tightening it. These gage leaves may all be of As with this type of pliers,

the same thickness or some may be thicker than others as shown in Fig. 5. Preferably they are cut away so that their front edges when in position against the mandrel will be notched as shown at 53.

The operation is as follows: The wire W is passed through hole 36 and the wire directing groove and caught around the mandrel in any well known manner. The tension is regulatedby the thumb nut 35. A gage leaf is brought down, or several gage leaves are brought down, adjoining the wire, according to whether or not the spring is to be closely wound or loosely wound. The side of the leaf farthest from lip 41 is intended to rest against the adjoining coil and this determines the distance between the coils. When the gage leaf is fixed in position, the mandrel is started and the front face 45 of the guide lip is brought down and held upon the mandrel 'while the whole tool is lightly pressed over toward the completed portion of the coil whereby the wire, directed by the wire-directing groove, will be fed evenly and easily with very little danger of the tool slipping or being pulled under by the action of the wire. I

I prefer to use V-shaped slots 18 and 19, as whatever size of wire is used tends to center itself at the bottom of one or the other and its position is regulated. In case-a.

groove wears out on the side adjoining the gage leaves, a gage leaf can he brought down to serve in place of the adjoining wall thereof and the wire can run out alongit and be guided thereby.

It is intended that the guide lip should rest on the bare part of the mandrel and not that around which the wire is being fed, and this counteracts any tendency to pull my tool under or around. While the gage leaves which are in action may rest upon the mandrel, whereby the notches 53 tend to assist the guide 11p, that is not necessary, as their principal function is to regulate the distance between the turns of the wire.

the natural axis of the tool there is not tendency to tip over, and I find that wire can be evenly and rapidly wound with a very slight exertion of strength through the hand of the operator.

I prefer the form of pliers shown, but other forms may be used, and guide lip with the gage leaf can be attached to any other suitable tool if desired; On the other hand, the guide lip may be removed and the pliers used for other purposes.

I claim:

1. In a device for winding helical springs,

the combinationof a plier member, which 7 includes handles and jaws so pivoted together that the adjoining jaw faces remain parallel at .all times and so pivoted that the pivots do not cross the longitudinai axis, the adjoining jaw faces each having a longi tudinal groove, with meansfor adjusting the tension on the handles without obstruct ing such longitudinal axis, a guide lip so detachably attached to the top of a jaw as to project ahead of the noses of thejaws, and one or more gage leaves pivoted to the side of the guide lip so as to be swung in front of the jaws- 2, In wire winding pliers, the combination'of aws having longitudinal wire-directing grooves, with means foradjusting the.

tension on the jaws, and a guide lip which projects ahead of the jaws.

* 3. In wire winding pliers, the combina tion of jaws having longitudinal wiredirectmg grooves, with means for adjusting the tension on the jaws, a guide lip which projects ahead of the jaws, and a plurality of gage leaves pivoted to the side of the guide lip.

4. In wire winding pliers, the combination of jaws having longitudinal wire-directing grooves, with means for adjusting the tension on the jaws, a guide lip which projects ahead of the jaws, and a plurality of gage leaves so pivoted to the side of the guide lip as to be swung in front of the jaws.

5. In wire winding pliers having jaws, the combination of a guide lip which projects ahead of the jaws, with means for adjusting the tension on the jaws.

6.. Wire winding pliers having jaws made, 1

detachable guide lip which projects ahead of the jaws, and a plurality of gage leaves pivoted to the side of the guide lip.

7. A detachable guide lip for a wire winding tool having a plurality of gage leaves pivoted to the side thereof.

In testimony whereof I hereto afiix my,

signature. 1

WILLIAM A. com c-on. 

